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当多沟地层剖面为秦巴地区泥盆系典型剖面之一。本文从沉积岩、沉积相的角度简述了上泥盆统擦阔合组的岩性特征,并将该组划分为四个岩性段,通过沉积构造、古生态、生物组合以及地球化学特征的研究,确定其为潮坪及潮下浅水沉积相;本文还系统地总结了该组中独特的口袋状、工具模等典型构造和滞流沉积,证实其中存在有两期风暴事件,并形成一种近源的风暴沉积。这一发现对该区古地理环境的研究具有一定意义。
The multi-trench profile is one of Devonian typical sections in Qinba area. In this paper, we briefly describe the lithological characteristics of the Upper Devonian sclerosis from the perspectives of sedimentary rocks and sedimentary facies, and divide the group into four lithologic segments. By means of sedimentary structures, paleoecology, biological assemblages and geochemical characteristics The paper also systematically summarizes the typical structure and stagnant sediments such as pocket-like, tooling and other typical structures in this group, confirming that there are two storms and forming a Near the source of the storm deposition. This discovery has certain significance to the study of ancient geographical environment in this area.